In the Natural Enhancement cosmetic studio in West London, two girls sit
nervously in the waiting room, holding hands. One tucks her red hair behind
her ears to reveal the cause of her nerves: a giant diamond tattooed on the
side of her head.

Like anyone who has woken up from a drunken night to find a garish painted
lady scrawled indelibly on his or her arm, or the name of a subsequently
adulterous partner inside a heart, she is branded with the stigma of
dabbling in ink. And, like many, she cannot afford to have her regrettable
mark removed.